Doorbell



FIG. 1 is a front and side perspective view of a doorbell showing thenew design;

FIG. 2 is a rear and side perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a right side view thereof; and,

FIG. 8 is a left side view thereof.

The broken line showing of the rear of the design is included for thepurpose of illustrating portions of the “article” and forms no part ofthe claimed design. The dash-dot-dash line represents the boundary ofthe claimed design.

CLAIM The ornamental design for a doorbell, as shown and described.